JP2016069881A - Construction method for temporary road used in railroad construction and others - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for readily constructing a highly stable and reliable temporary road for railroad construction and others, the temporary road realizing sufficient design strength and being more durable against partial damage caused by a vertical load.SOLUTION: In a construction method for a temporary road 10 for railroad construction and others in which a synthetic resin foam block 20 is piled on rail tracks 2A, 2B between station platforms 1A, 1B, a plurality of synthetic resin foam blocks 20 on a top tier is cut while piling the synthetic resin foam blocks that constitute the temporary road 10 for railroad construction and others, a top surface of the plurality of synthetic resin foam blocks is finished flush, and the remaining synthetic resin foam blocks 20 are piled on the flush finished surface of the plurality of synthetic resin foam blocks.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a method for constructing a temporary road for construction on a railway line, and more particularly to a method for easily constructing a temporary road for construction such as railway with high stability and reliability.

  Repair and improvement work for station platforms or railway-related facilities are usually performed in a short time from the last train to the first train. At that time, a temporary road is constructed on the track in order to put heavy equipment for construction into a station platform or the like.

As such a temporary road, the present applicant has developed the technology described in Patent Document 1 and is implementing it at each site. This technology includes a synthetic resin foam leg block formed in a shape having a concave groove straddling a railroad rail on the bottom surface of a rectangular parallelepiped, and a synthetic resin foam square block or an inclined block laminated thereon. This is a temporary road composed of a protective plate covering the upper surface.
This technology is to construct a temporary road with lightweight various blocks made of synthetic resin foam, so its construction and removal work is easy, and it is effective as a temporary road for bringing heavy machinery over the station platform. It was something.

Japanese Patent No. 4986803

  By the way, the block placement surface in the area where the rail is laid, that is, the surface on which ballast (gravel) is spread, may be uneven rather than flat. There are also cases where depressions are formed between tracks in consideration of drainage, etc., troughs for protection of facilities such as drainage trenches and signal cables are formed, and there are height differences in consideration of track curves. . When the blocks are stacked on the mounting surface with such unevenness, the blocks are stacked in a state inclined in various directions, and a structure in which a gap is generated between the blocks without forming a surface contact between the blocks is formed. Is done. Such a structure not only makes it difficult to exhibit sufficient design strength, but also may cause damage to the corners of the block due to concentrated loads, and there is room for improvement as a temporary road for carrying heavy machinery. It was.

  The present invention has been made in view of the actual situation of the background art described above, and in a temporary road for construction work such as a railway in which synthetic resin foam blocks are stacked on a track between station platforms, the road structure is It is possible to easily construct temporary roads for construction such as railways that are excellent in loading stability of the foam blocks that make up, exhibit sufficient design strength, are resistant to partial damage due to overloading, and are highly reliable. The problem is to propose a method.

In order to solve the above-described problems, the present invention is a method for constructing a temporary road for construction such as railways described in the following [1] to [4].
[1] In a method for constructing a temporary road for construction work such as railways in which synthetic resin foam blocks are stacked on a railroad between station platforms,
In the middle of stacking the synthetic resin foam blocks constituting the temporary road for construction such as the railway, the plurality of stacked synthetic resin foam blocks are cut, and the top surfaces of the plurality of synthetic resin foam blocks are flush with each other. A method for constructing a temporary road for construction such as a railway, characterized in that the remaining synthetic resin foam blocks are stacked on the upper surfaces of the plurality of synthetic resin foam blocks finished in the same plane.
[2] The top surfaces of the plurality of synthetic resin foam blocks are finished to be flush with each other at a height of ½ or less of a vertical height of a temporary road for construction such as a railway. The method for constructing a temporary road for construction such as railways as described in [1] above.
[3] Finishing the upper surfaces of the plurality of synthetic resin foam blocks flush with each other at the position of the upper surface of the synthetic resin foam block constituting the lowermost layer of the entire width and total length of the temporary road for construction such as railways The method for constructing a temporary road for construction work such as railways as described in [1] or [2] above.
[4] Cut the plurality of uppermost synthetic resin foam blocks stacked in the middle of the stacking of the synthetic resin foam blocks constituting the temporary road for construction such as the above-mentioned railway, Leveling the block in the horizontal direction and performing along the leveled line, the method for constructing a temporary road for construction of railways according to any one of the above [1] to [3] .

  According to the above-described method for constructing a temporary road for construction of railways according to the present invention, a plurality of synthetic resin foams at the uppermost stage of the synthetic resin foam blocks constituting the temporary road for construction of railways are stacked. Cut the blocks, finish the top surfaces of the plurality of synthetic resin foam blocks flush, and stack the remaining synthetic resin foam blocks on the top surfaces of the plurality of synthetic resin foam blocks finished flush. Therefore, the synthetic resin foam blocks stacked on the upper surface of the plurality of synthetic resin foam blocks finished at least flush with each other may be stably stacked without gaps and in surface contact. In addition, it is possible to provide a temporary road for construction such as a railway that exhibits sufficient design strength and is less likely to be partially damaged by an overload and that is highly reliable in terms of strength.

It is the perspective view which showed notionally an example of the construction site of the temporary road for constructions, such as a railway. It is a cross-sectional view of the site shown in FIG. It is the cross-sectional view which showed the middle of the operation | work of the construction method of the temporary road for constructions, such as a railway which concerns on this invention. It is the cross-sectional view which showed the middle of the operation | work of the construction method of the temporary road for constructions, such as a railway which concerns on this invention. It is the cross-sectional view which showed the middle of the operation | work of the construction method of the temporary road for constructions, such as a railway which concerns on this invention. It is the cross-sectional view which showed the middle of the operation | work of the construction method of the temporary road for constructions, such as a railway which concerns on this invention. It is the cross-sectional view which showed the middle of the operation | work of the construction method of the temporary road for constructions, such as a railway which concerns on this invention. It is the cross-sectional view which showed an example of the temporary road for constructions, such as a railway constructed by the construction method concerning the present invention. It is the perspective view which showed notionally the example of the temporary road for constructions, such as a railway constructed | assembled by the construction method which concerns on this invention.

  Hereinafter, an embodiment of a construction method of a temporary road for construction work such as railway according to the present invention will be described in detail based on the drawings.

  FIG.1 and FIG.2 is the figure which showed an example of the construction site of the temporary road for constructions, such as a railway. In this construction site, a station platform is formed at a position where the track is curved, and two curved tracks 2A and 2B are laid in parallel on the front side of the back station platform 1A, and further on the front side. Has station platform 1B. Both the tracks 2A and 2B take into account the centrifugal force due to the curve, and as shown in FIG. 2, the sleepers 4 are installed on the rail laying surface on which the ballast (gravel) 3 is laid, By laying rails 5 on the sleepers 4, the rails 5 are installed in an inclined state.

  Not only the rails 5 protrude upward on the railroad tracks 2A and 2B between the station platforms 1A and 1B, but the upper surface of the ballast 3 is often larger and more uneven than the flat ballast. In the illustrated site, a drainage groove or the like considering drainage or the like is formed between the lines 2A and 2B laid in parallel, and there is a large difference in height.

  In recent years, there has been an increase in barrier-free, escalators, elevator installations, station bridge construction, etc. at station platforms, and such construction is usually performed in a short time from the last train to the first train. At that time, it is advantageous from the viewpoint of work efficiency to put heavy equipment for construction into the station platform. The homes 1A and 1B are connected to each other, and a temporary road for railway construction is constructed so as to be approximately the same height as these station platforms.

  The temporary road 10 for construction such as railway is constructed by stacking synthetic resin foam blocks 20, but if necessary, a sheet 30 laid on the ballast 3 for preventing damage to the stacked synthetic resin foam blocks 20 A protective plate 31 that covers the upper surface of the stacked synthetic resin foam block 20 is also used.

  The synthetic resin foam block 20 is basically a rectangular block 20A having a rectangular parallelepiped shape, but a leg block 20B in which a concave groove is formed on the bottom surface of the rectangular parallelepiped so as to straddle the track. A shaped or triangular inclined block 20C, an accessory block 20D having an appropriate size and shape, and the like can also be used. The accessory block 20D can be suitably used for filling a gap between the synthetic resin foam blocks or adjusting the unevenness of the track. The size and shape of the synthetic resin foam block 20 can be appropriately adjusted by a conventionally known means such as using a nichrome wire cutting machine.

  The size of the block 20 is preferably designed to be 180 to 240 cm in length, 90 to 120 cm in width, and 40 to 60 cm in thickness from the viewpoint of transportability and work efficiency. Moreover, it is preferable from the balance of workability and intensity | strength that the magnitude | size of the ditch | groove formed in the leg part block 20B is designed by width 30-50cm and height 15-25cm. In addition, the said thickness in the inclination block 20C means the thickness in the inclination direction center part of an inclined surface. Moreover, the concave groove formed in the leg block 20B, the slope of the inclined block 20C, and the shape of the accessory block 20D may be cut and formed in the field.

  Examples of the base resin of the synthetic resin foam constituting the block 20 include polystyrene resins such as polystyrene and impact-resistant polystyrene, polyolefin resins such as polyethylene and polypropylene, polybutylene succinate, polyethylene terephthalate, and polylactic acid. Polyester resin such as polycarbonate resin, polyurethane resin, polyphenol resin, composite resin of polystyrene and polyolefin, etc. Among them, characteristics such as lightness, water resistance, durability and cost viewpoint From the viewpoint of toughness, oil resistance, etc., it is preferable to use a polyolefin resin, and from both viewpoints, it is preferable to use a composite resin of polystyrene and polyolefin. preferable.

  Examples of the foam formed using the base resin include an in-mold foam particle molded body and an extruded foam molded body. As the synthetic resin foam block 20 used in the present invention, any of known foams can be used. Can also be used. Specifically, a polystyrene resin foamed particle mold, a polyolefin resin foam particle mold, the composite resin foam particle mold, a polystyrene resin extrusion foam, or a polyolefin resin foam molding. The body can be preferably used.

  Below, an example of the construction method of the temporary road 10 for construction of railways, etc. according to the present invention using the above-described synthetic resin foam block 20 will be described based on FIGS.

First, as shown in FIG. 3, a sheet 30 that prevents damage to the stacked synthetic resin foam blocks 20 is laid on the railroad tracks 2A and 2B between the station platforms 1A and 1B, in particular, on the ballast 3 that is heavily bumpy. .
Examples of the sheet 30 include so-called flameproof sheets, curing sheets, and the like. Among them, a vinyl chloride flameproof sheet obtained by bonding a vinyl chloride film to an ester tarpaulin fabric is flameproof, insulation effect on the track, strength, weight, ballast. It is preferable from the viewpoint of curving the shape. In addition, the thickness of the sheet 30 is preferably 0.1 to 0.8 mm in view of the balance between strength and flexibility, and the length and width dimensions of the sheet 30 are from the viewpoint of transportability, work efficiency, and the like. Those having a length of 200 cm or more, a length of 400 cm or more, and a width of 500 to 600 cm are preferable.

  Next, as shown in FIG. 4, various shapes of synthetic resin foam blocks 20, that is, a square block 20A, a leg block 20B, an inclined block 20C, and further a combination of an accessory block 20D as necessary, such as a railway, etc. The synthetic resin foam blocks 20 constituting the lowermost layer of the full width and the full length of the temporary road for construction are stacked. Here, in this specification, the synthetic resin foam blocks constituting the lowermost layer of the full width and the full length of the temporary road for construction such as railways are stacked, as shown in FIG. This means that the synthetic resin foam blocks 20 are stacked up to the lowest stacked state in which the resin foam blocks 20 are placed and the upper surfaces thereof are positioned substantially on the same horizontal plane. , The synthetic resin foam blocks 20 are stacked in two or more stages.

  Subsequently, as shown in FIG. 5, leveling is performed in the horizontal direction with respect to the plurality of stacked synthetic resin foam blocks 20 at the uppermost stage. Here, in this specification, the horizontal direction means a horizontal direction, and is used in a concept including not only strict horizontal but also a state of being inclined to some extent, and an inclination of about ± 10 degrees with respect to the horizontal is allowable. Is done. This leveling can be performed using, for example, a laser marking device equipped with a laser light emitting device, and a laser beam is irradiated to the side surfaces of the stacked synthetic resin foam blocks 20 at the uppermost stage, and the level is adjusted accordingly. What is necessary is just to draw the line L on the surface of the synthetic resin foam block 20 using an ink thread, a pen, or the like.

  Subsequently, as shown in FIG. 6, the synthetic resin foam block 20 is cut along the line L on which the leveling is performed, and the upper surfaces of the plurality of synthetic resin foam blocks 20 are finished to be flush with each other. The synthetic resin foam block 20 may be cut using a nichrome wire cutting machine. The nichrome wire cutting machine is composed of, for example, a main body case, two handles connected from the main body case via a cord, and a nichrome wire connected between the two handles. It is preferable to attach a fluorescent / phosphorescent reflecting tape to the main body case and handle of the wire cutting machine. As a result, the nichrome wire cutting machine can easily recognize the case main body and the handle even during night work, and there is no possibility of tripping.

  Subsequently, as shown in FIGS. 7 and 8, the remaining synthetic resin foam blocks 20 are stacked on the top surfaces of the plurality of synthetic resin foam blocks 20 finished to be flush with each other, and the left and right station platforms 1 </ b> A, A temporary road 10 is constructed for railway construction that is approximately the same height as 1B. At this time, from the viewpoint of stability of the temporary road 10 and further from the viewpoint of effectively performing load distribution, the stack of the blocks 20 is in a staggered arrangement (arrangement where the abutting portions of the left and right blocks do not match in the vertical direction). It is preferable to do so. In consideration of the compression amount of the temporary road 10, it is preferable to stack the blocks 20 so as to be higher than the upper surface of the station platform 1. In this case, the height to be increased is preferably about 50 mm. The temporary road may be constructed by stacking the blocks 20 at the same height as the upper surface of the station platform 1 in consideration of the weight of the construction vehicle, the vehicle traveling method, and the like.

Then, as shown in FIG. 8, the protection plate 31 is laid on the upper surface of the constructed temporary road 10 so that the end portion is laid on the station platform 1.
Examples of the protective plate 31 include well-known wood-based plywood used for ground curing and ground securing at construction sites, etc., or plastic-based resin plates and rubber-based resin plates. The wood-based plywood being used is particularly preferably used. Among the wood-based plywood, a structural plywood stipulated in JAS (Japanese Agricultural Standard) is particularly preferably used, and specifically, a structural plywood conforming to JAS1 class can be used. In addition, examples of plastic resin plates include recycled polyethylene plates, recycled polypropylene plates, and bakelite plates. Specifically, resin-made floorboards “Daikoku board” (registered trademark), “Superjurite”, manufactured by Keiyo Kogyo Co., Ltd. “Superjurite M2” can be used. The thickness of the protective plate 31 is preferably 9 to 18 mm in view of the balance between strength and flexibility (flexibility). The length and width of the protective plate 31 are in terms of transportability, work efficiency, and the like. Therefore, those having a length of 180 to 200 cm and a width of 90 to 100 cm are preferable.

  The construction work of the temporary road 10 described above can be performed easily and in a short time because the main work is a stacking work of the lightweight synthetic resin foam blocks 20. Further, the temporary road 10 for construction such as railways constructed as described above has no gap between the synthetic resin foam blocks 20 stacked on the upper surfaces of the plurality of synthetic resin foam blocks 20 finished at least flush with each other. , Providing a temporary road 10 for construction work such as railways that is stable and piled up in a state of surface contact, exhibits sufficient design strength, is less susceptible to partial damage due to overload, and is highly reliable can do.

  In the construction work of the temporary road 10, the blocks 20A, 20B, 20C, and 20D are coated with urethane resin on the surface by spraying or the like to increase the strength, or plywood or resin plate is attached to the upper surface. Good. Moreover, it is preferable that an L-shaped pin is driven into each of the stacked blocks 20A, 20B, 20C, and 20D to strengthen the connection between the upper and lower blocks.

  With the constructed temporary road 10, as shown in FIG. 9, the station station 1A in the back and the station platform 1B in the foreground are connected to form a communication passage, and heavy equipment such as vehicles loaded with construction materials is connected to the station platform 1A, Each can enter 1B. The temporary road 10 used for entering heavy machinery will be removed before the first operation. The removal work of the temporary road 10 is a procedure reverse to the constructed procedure, that is, the protective plate 31 is first removed, then the blocks 20 stacked from above are removed, and the sheet 30 and the like are further removed. Like the construction work, the removal work can be performed easily and in a short time. In addition, after the removal, the temporary road construction portion can be restored to the original state without any special work, and the seat 30 is interposed between the ballast 3 and the block 20, so that the ballast 3 is prevented from biting into the block 20 and causing damage. Then, the dismantled block 20 is transferred to a nearby storage location, stacked, stored, and reused at a later date. In order to simplify the reconstructing work of the temporary road, it is preferable to place a mark such as a number on the side of each block.

  As mentioned above, although embodiment of the construction method of the temporary road for constructions, such as railways concerning the present invention was described, the present invention is not limited to the above-mentioned embodiment at all, and described in the claim. Naturally, various modifications and changes are possible within the scope of the technical idea of the present invention.

  For example, in the above-described embodiment, the block 20 is stacked on the lines 2A and 2B in a state where the leg block 20B in which a concave groove extending over the line is formed on the bottom surface of the rectangular parallelepiped and the rail 5 of the protruding line is avoided. However, the present invention is not limited to this. For example, the first synthetic resin foam block is provided between the rails 5 and 5, and the second synthetic resin foam block is provided between the rails 5 and 5. By installing the synthetic resin foam block so that the upper surface of both synthetic resin foam blocks is equal to or higher than the upper surface height of the rail 5 and the third synthetic resin foam block is installed thereon, The blocks 20 may be stacked on the lines 2A and 2B in a state where the rail 5 is avoided.

  In the above embodiment, after the synthetic resin foam blocks constituting the lowermost layer of the full width and the entire length of the temporary road for construction such as railways are stacked, the stacked uppermost synthetic resin foam blocks are The top surface of the synthetic resin foam blocks constituting the bottom layer of the entire width and total length of the temporary road for construction such as railways is to finish the top surfaces of the plurality of synthetic resin foam blocks by cutting horizontally. However, the present invention is not limited to this, and may be any way as long as the synthetic resin foam blocks constituting the temporary road for construction of railways, etc. are being stacked. After the synthetic resin foam blocks are stacked up to a height of about half or less of the height, the plurality of stacked synthetic resin foam blocks at the uppermost level are horizontally moved. The finishing of the top surfaces of the plurality of synthetic resin foam blocks by flushing may be performed at a position of 1/2 or less the height in the vertical direction of a temporary road for construction such as a railway, In addition, if there is a large unevenness such as a depression in some parts, but the other part is an installation surface where there is no inconvenience such as tilting in the placed block, the composition in the part where there is a large unevenness such as a depression After stacking the resin foam blocks, it is not inconvenient to finish the top surfaces of the plurality of synthetic resin foam blocks by cutting the stacked uppermost synthetic resin foam blocks. It is good also as performing in the position of the upper surface of the synthetic resin foam block which comprises the same level as an installation surface. However, the position where the upper surfaces of the plurality of synthetic resin foam blocks are finished flush with each other is a lower stacking position of the synthetic resin foam blocks 20 from the viewpoint of constructing a temporary road 10 for construction work such as railway with higher strength and reliability. It is preferable to carry out in

  Since the present invention is a method that exhibits sufficient design strength, is less likely to cause partial breakage due to an overload, and can easily construct a temporary road for construction such as a railway with high strength and reliability, It can be widely used as a method for constructing temporary roads for construction work such as railways for loading heavy machinery into station platforms.

1A, 1B Station platform 2A, 2B Track 3 Ballast 4 Sleeper 5 Rail 10 Temporary road 20 Synthetic resin foam block 20A Rectangular block 20B Leg block 20C Inclined block 20D Property block 30 Seat 31 Protection plate L Level line

Claims (4)

In the construction method of a temporary road for construction work such as railways, which is made by stacking synthetic resin foam blocks on the railway line between station platforms,
In the middle of stacking the synthetic resin foam blocks constituting the temporary road for construction such as the railway, the plurality of stacked synthetic resin foam blocks are cut, and the top surfaces of the plurality of synthetic resin foam blocks are flush with each other. A method for constructing a temporary road for construction such as a railway, characterized in that the remaining synthetic resin foam blocks are stacked on the upper surfaces of the plurality of synthetic resin foam blocks finished in the same plane.   The top surfaces of the plurality of synthetic resin foam blocks are finished to be flush with each other at a height of ½ or less of the vertical height of a temporary road for construction such as a railway. The construction method of temporary roads for construction of railways etc. according to 1.   Finishing the upper surfaces of the plurality of synthetic resin foam blocks flush with each other is performed at the position of the upper surface of the synthetic resin foam block constituting the lowermost layer of the full width and full length of a temporary road for construction such as railways. The construction method of the temporary road for constructions, such as a railway of Claim 1 or 2.   The cuts of the plurality of uppermost synthetic resin foam blocks stacked in the middle of stacking the synthetic resin foam blocks constituting the temporary road for construction such as the railway are horizontally placed on the uppermost plurality of synthetic resin foam blocks stacked. 4. The method for constructing a temporary road for construction work such as a railway according to claim 1, wherein leveling is performed in a direction, and the leveling is performed along a line where the leveling is performed.

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